May I ask if by real occurrences you mean those recorded in the regular history books, or those that took place during that time in the past?
If you mean in the past, the big events should be fine: Zhao Ji's fornication with Lao Ai, Cheng Xi's defection, Lu Buwei's strange goods, Yan Dan's coming to Qin as a hostage, Ying Zheng's hostage in Zhao when he was a child, Jing Ke's stabbing of Qin, and the unification of the world, etc., they should all be real, but as for the specific process, if the history book remembers it so clearly, there will be nothing in the future, such as what is happening in the theater, drama, and TV! The history books have always been concise and concise! History books have always been brief and concise, for example, remember should be the "Shiji - Wei Shijia" write Wei's final demise only used the "flooding of the Great Liang" four words to write a seven warring states final demise.
If you are interested in that period of history, you can read the book yourself and pay more attention to the archaeological discoveries of that era. Do not want to read by yourself, highly recommended a Mr. Wang Liqun in the hundred lectures in the "Wang Liqun read the history of Qin Shi Huang series", Mr. really knowledgeable, elegant, very good!
As for those who really happened, who knows! How many truths have been buried, consciously or unconsciously, for the sake of the elders, for the sake of the honored ones, and under the Spring and Autumn style of writing? Time will make people forget, even the words left behind will be anonymous, not to mention the details! This problem, if Sima Qian can not solve, I guess Zhihu also can not solve ......
Interested in history, read a history book it ...... history book seven points true and three points false records, historical drama three points true and seven points false interpretation, not to mention a costume idol drama?